Hi, i have created a sequence with following definition in .py file :

reference = fields.Char(string='Order Reference', required=True, copy=False, readonly=True,
                        default=lambda self: _('New'))

and in create method:

@api.model
def create(self, vals):
    if vals.get('reference', _('New')) == _('New'):
        vals['reference'] = self.env['ir.sequence'].next_by_code('hospital.patient') or _('New')
    res = super(HospitalPatient, self).create(vals)
    return res

i couldn't understand what i'm missing(using odoo14). would you help please ?

Thanks